CN101445372A - Method for applying membrane oxygen enrichment technology in roller kiln - Google Patents
Method for applying membrane oxygen enrichment technology in roller kiln Download PDFInfo
- Publication number
- CN101445372A CN101445372A CNA2008102337264A CN200810233726A CN101445372A CN 101445372 A CN101445372 A CN 101445372A CN A2008102337264 A CNA2008102337264 A CN A2008102337264A CN 200810233726 A CN200810233726 A CN 200810233726A CN 101445372 A CN101445372 A CN 101445372A
- Authority
- CN
- China
- Prior art keywords
- kiln
- oxygen
- gas
- air
- oxygen enrichment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Tunnel Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a method for applying the membrane oxygen enrichment technology in a roller kiln, which is realized through the technical scheme: air is pumped by air input blower through a filter into an oxygen enrichment membrane device, and is transformed into oxygen enriched air under the action of pressure difference; the oxygen enriched air is sent by an air pump to a gas-water separation system and a dehumidification system, then enters a pressure stabilizing system, and finally after being preheated by a heater is sent by an oxygen enrichment nozzle to the upper layer and the lower layer of the manufactured ceramic tile; combustible gas is taken as fuel; the air input direction of the gas fuel is vertical to the air input direction of the oxygen enriched air; the gas fuel is distributed in burner high-speed injection kilns on two sides of the kiln body; and thermocouples distributed in different box bodies are used for testing the temperature in the kiln furnace when necessary, and sending signals to an adjustor which makes comparison between the signals and data set in advance, and issues instructions to an electric actuator to control the divergence of a combustible gas adjusting valve, thereby adjusting the feeding amount of the combustible gas to ensure that the temperature in the kiln remains at the required level.
Description
Technical field
The present invention relates to the Production of Ceramics field, more specifically relate to a kind of in roller kiln the method for applying membrane oxygen enrichment technology.
Background technology
Roller kiln are that commonplace key equipment is used in the Production of Ceramics field, generally adopt double-deck kiln type, the heat-resisting roller of middle radiation, and type of drive has chain gear, geartransmission etc. multiple.The burning of control roller kiln is directly connected to the quality of ceramic product, consumes energy what and to the influence of environment, because oxygen only accounts for 20.94% in the normal air, nitrogen accounts for 78.09%, regional oxygen content at height above sea level is lower, in order to improve efficiency of combustion, in combustion processes, need to feed a large amount of combustion airs, but really participate in about 1/5 of an incendiary duty gas total amount, and the nitrogen of duty gas total amount 4/5 and other rare gas elementes not only can not burn, can absorb a large amount of heats on the contrary, along with flue gas enters in the atmosphere, not only cause the waste and the environmental pollution of resource, and heat skewness in kiln that bigger air output also can make burning produce, it is irregular to cause ceramic product to shrink, the quality instability.
The oxygen-enriched combustion-supporting technology adopts exactly than the hyperoxic oxygen-rich air of conventional air and participates in burning, can effectively improve advantages such as efficiency of combustion, raising flame temperature, the combustionvelocity of accelerating, increase heat utilization efficiency, reduction smoke discharge amount, can reduce fuel uses, reduce combustion-supporting gas feeding amount, play the effect of energy-saving and emission-reduction.Membrane oxygen enrichment technology equipment is simple, easy to operate, safety, start fast, free from environmental pollution, energy-saving effect is remarkable, its ultimate principle is: utilize each moiety in the air to see through the infiltration rate difference of polymeric membrane for separation, under the driving of pressure difference, make oxygen preferentially pass through film, thereby obtain higher and the oxygen-rich air that a nitrogen content is relatively low of oxygen concentration, join firing system, improve efficiency of combustion, membrane oxygen enrichment technology is at boiler, the existing application on chemical industry and the metallurgical furnace, because it is relatively stricter to the requirement of combustion conditions and temperature distribution that roller kiln are produced pottery, so the example of membrane oxygen enrichment technology successful Application in roller kiln does not appear in the newspapers and discloses.Existing roller kiln adopt film oxygen enriching can have following problem: adopt after the oxygen-rich air, combustion air air intake pressure reduces, air current flow in the kiln weakens, the heat transmission that causes the roller kiln internal combustion to produce is slow, furnace gas is low to the heat exchange efficiency of product, be unfavorable for that clinkering zone vertically is formed with rule, controllable thermograde in the kiln, firing period prolongs; Because of air flowing in the roller kiln is little, transverse temperature difference is big in the kiln, and the product size deviation of producing is big, is unfavorable for quality control.
Summary of the invention
In order to solve the problem that exists in the background technology, the invention provides a kind of in roller kiln the method for applying membrane oxygen enrichment technology, adopt this method successfully membrane oxygen enrichment technology to be applied in the roller kiln, reduce the cost that utilizes roller kiln to produce ceramic tile greatly, enhance productivity, the objective of the invention is to realize by following technique means:
The air inlet blower fan passes through air in the strainer suction oxygen permeable membrane device, under action of pressure, make oxygen-rich air, utilize air pump that oxygen-rich air is delivered to gas-water separation system, systems for moisture removal, enter voltage-stabilizing system, pass through the well heater preheating at last, vertically send into the upper and lower of institute's firing ceramics brick by the oxygen enrichment nozzle along roller kiln respectively; The employing inflammable gas acts as a fuel, the geseous fuel airintake direction is vertical with the oxygen-rich air airintake direction, geseous fuel adopts the burner that is distributed in kiln body both sides to spray in the kiln at a high speed, with the oxygen-rich air burning that vertically enters, two strands of vertical gases impact mutually, form and strengthen transmission of heat by convection, the heat that burning is produced transmits at the roller kiln lateral divergence, reach the evenly laterally purpose of furnace temperature, can not occur in the kiln transverse temperature difference product size deviation big, that produce big, be unfavorable for problem such as quality control.The present invention's employing is distributed in the intravital thermopair of different casees and detects temperature in the kiln at any time, and signal passed to setter, setter contrast preliminary setting data and signal, issue instructions to YE, the aperture of control inflammable gas variable valve, to regulate the amount of sending into of inflammable gas, make kiln temperature be in required level; The aperture and the temperature of inflammable gas variable valve are mated automatically and reasonably, make the interior system of roller kiln be in best state, in roller way kiln under the prerequisite of air current flow, with in the stove everywhere temperature maintenance guaranteeing that good product quality, energy consumption are low, and the little level of temperature fluctuation.
For inflammable gas can fully be stirred with transverse temperature in the even kiln with oxygen-rich air, the burner that geseous fuel is sent in the kiln is preferably the divergence expression gas burner.
In order to make inflammable gas form intense impact with oxygen-rich air, the horizontal gas of roller kiln is fully stirred form and strengthen transmission of heat by convection, inflammable gas of the present invention is preferably the coal gas that contains other incombustible gas, incombustible gas in the coal gas flows in whole roller kiln after vertically colliding with other non-flammable gas in the oxygen-rich air, promote the gas stream in the stove circulation, heat vertically evenly transmits at roller kiln, can effectively avoid inflammable gas fully burned cause with the oxygen-rich air that vertically enters mutually the impulse force degree weaken the variety of issue that causes that mass defect that the interior transverse temperature skewness of kiln causes and oxygen-rich air intake pressure reduce to bring, air current flow weakens vertical the transmission slowly of the interior heat of the roller kiln that cause in the solution kiln, and furnace gas is low to the heat exchange efficiency of product, defectives such as firing period prolongation.
The invention has the beneficial effects as follows:
1. because oxygen-rich air has improved efficiency of combustion, and the combustion air air input significantly reduces, and smoke discharge amount has reduced more than 50%, the smoke exhaust heat loss reduces, and not only save energy reduces production costs greatly, also is of value to the reduction topsoil;
2. owing to adopt inflammable gas to act as a fuel, the geseous fuel airintake direction is vertical with the oxygen-rich air airintake direction, two strands of vertical gases impact mutually, form and strengthen transmission of heat by convection, the heat that burning is produced transmits at the roller kiln lateral divergence, can be evenly horizontal furnace temperature, can not occur in the kiln transverse temperature difference product size deviation big, that produce big, be unfavorable for problem such as quality control;
3. adopt the coal gas that contains other incombustible gas to act as a fuel, incombustible gas in the coal gas can be with the formation intense impact of vertically colliding of other non-flammable gas in the oxygen-rich air, the horizontal gas of roller kiln is fully stirred formation strengthen transmission of heat by convection, promoted the gas stream in the stove circulation, and heat can vertically evenly transmit at roller kiln, can effectively avoid inflammable gas fully burned cause with the oxygen-rich air that vertically enters mutually the impulse force degree weaken the variety of issue that causes that mass defect that the interior transverse temperature skewness of kiln causes and oxygen-rich air intake pressure reduce to bring, air current flow weakens vertical the transmission slowly of the interior heat of the roller kiln that cause in the solution kiln, and furnace gas is low to the heat exchange efficiency of product, defectives such as firing period prolongation.
4. there is not a nitrogen content of thermal radiation capability to reduce in the oxygen-rich air, strengthened the thermal radiation power of furnace gas to product, accelerate the exchange rate of furnace gas to product, shorten firing period, on existing equipment, significantly promoted the output of product, because furnace gas to the enhancing of product thermal radiation capability, makes firing temperature also reduce, reduced energy consumption simultaneously;
5. owing to adopt temperature and coal gas varitrol, the roller kiln system is in best working order all the time.
Description of drawings
Fig. 1 produces the schematic flow sheet of applying membrane oxygen enrichment technology in the ceramic process for roller kiln;
Fig. 2 is applied in back oxygen-rich air and inflammable gas working state schematic representation in the roller kiln for adopting method of the present invention with membrane oxygen enrichment technology.
Fig. 3 is a divergence expression gas burner structural representation of the present invention.
Embodiment
Embodiment 1:
Reaching 130 meters long roller kiln of ceramic company with the Yimen meaning is example, roller kiln are divided into 60 joints, long 2.16 meters of every joint, the air inlet blower fan passes through air in the strainer suction oxygen permeable membrane device, under action of pressure, make oxygen concn and be 32% oxygen-rich air, utilize air pump that oxygen-rich air is delivered to gas-water separation system, systems for moisture removal, enter voltage-stabilizing system, pass through the well heater preheating at last, vertically send into the upper and lower of institute's firing ceramics brick by the oxygen enrichment nozzle along roller kiln respectively; Employing coal gas acts as a fuel, the gas inlet direction is vertical with the oxygen-rich air airintake direction, coal gas adopts the divergence expression gas burner that is distributed in kiln body (1) both sides to spray in the kiln at a high speed, employing is distributed in the intravital thermopair of different casees and detects temperature in the kiln at any time, and signal passed to setter (3), setter contrast preliminary setting data and signal, issue instructions to YE, the aperture of control inflammable gas variable valve, to regulate the amount of sending into of inflammable gas, make kiln temperature reach required level rapidly; The aperture and the temperature of inflammable gas variable valve are mated automatically and reasonably, make the interior system of roller kiln be in best state, in roller way kiln under the prerequisite of air current flow, with in the stove everywhere temperature maintenance guaranteeing that good product quality, energy consumption are low, and the little level of temperature fluctuation.
Adopt method of the present invention to realize that temperature is as follows in the kiln behind the film oxygen enriching everywhere:
Each technical indicator and data are as follows:
The oxygen-rich air flow is: 1700NM
3/ h, output is: 8500m
2/ day; The minimum air intake pressure of oxygen-rich air is reduced to 0.2MPa, consumption coal gas amount 6500m
3/ day, the product size deviation of burning till is less than 1.
Before adopting non-membrane oxygen enrichment technology, temperature is as follows everywhere in the kiln:
Each technical indicator and data are as follows:
Combustion air flow is: 6800NM
3/ h, output is: 5500m
2/ day; The minimum air intake pressure of combustion air is 0.8MPa, and the product size deviation of burning till is less than 1.
Embodiment 2:
Reaching 97 meters long roller kiln of ceramic company with Yimen meaning is example, and the concrete application mode of the membrane oxygen enrichment technology that is adopted is with embodiment 1, adopts method of the present invention to realize that temperature is as follows in the kiln behind the film oxygen enriching everywhere:
Each technical indicator and data are as follows:
The oxygen-rich air flow is: 1200NM
3/ h, output is: 5500m
2/ day; The minimum air intake pressure of oxygen-rich air is reduced to 0.2MPa, consumption coal gas amount 5100m
3/ day, the product size deviation of burning till is less than 1.
Before adopting non-membrane oxygen enrichment technology, temperature is as follows everywhere in the kiln:
Each technical indicator and data are as follows:
Combustion air flow is: 4800NM
3/ h, output is: 3500m
2/ day; The minimum air intake pressure of combustion air is 0.8MPa, and the product size deviation of burning till is less than 1.
Claims (3)
1, a kind of method of utilizing membrane oxygen enrichment technology in roller kiln is characterized in that: the air inlet blower fan by in the strainer suction oxygen permeable membrane device, makes oxygen-rich air to air under action of pressure; Utilize air pump that oxygen-rich air is delivered to gas-water separation system, systems for moisture removal, enter voltage-stabilizing system, pass through the well heater preheating at last, send into the upper and lower of institute's firing ceramics brick by the oxygen enrichment nozzle respectively; The employing inflammable gas acts as a fuel, and the geseous fuel airintake direction is vertical with the oxygen-rich air airintake direction, and geseous fuel adopts the burner that is distributed in kiln body both sides to spray in the kiln at a high speed; Utilization is distributed in the intravital thermopair of different casees and detects temperature in the kiln at any time, and signal is passed to setter.
2, a kind of method of utilizing membrane oxygen enrichment technology in roller kiln according to claim 1 is characterized in that: the described burner that geseous fuel is sent in the kiln is the divergence expression gas burner.
3, a kind of method of utilizing membrane oxygen enrichment technology in roller kiln according to claim 1 and 2, it is characterized in that: described inflammable gas is the coal gas that contains other incombustible gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102337264A CN101445372B (en) | 2008-12-15 | 2008-12-15 | Method for applying membrane oxygen enrichment technology in roller kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102337264A CN101445372B (en) | 2008-12-15 | 2008-12-15 | Method for applying membrane oxygen enrichment technology in roller kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101445372A true CN101445372A (en) | 2009-06-03 |
| CN101445372B CN101445372B (en) | 2012-05-23 |
Family
ID=40741299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102337264A Expired - Fee Related CN101445372B (en) | 2008-12-15 | 2008-12-15 | Method for applying membrane oxygen enrichment technology in roller kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101445372B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791490A (en) * | 2014-02-25 | 2014-05-14 | 武汉理工大学 | Oxygen-enriched atmosphere ceramic sintering system and ceramic sintering method |
| CN109052999A (en) * | 2018-09-11 | 2018-12-21 | 营口益嘉镁业科技有限公司 | A kind of embrane method oxygen, oxygen-enriched combustion-supporting roast high-purity magnesium oxide technique mechanism |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084865C (en) * | 1997-06-09 | 2002-05-15 | 中国科学院大连化学物理研究所 | Combustion method for industrial heating furnace by membrane local rich oxygen supply |
| CN2643182Y (en) * | 2002-11-25 | 2004-09-22 | 沈光林 | A partially oxygen-enriching combustion-supporting system for boiler |
| CN101182217A (en) * | 2007-12-06 | 2008-05-21 | 武汉理工大学 | Rich-oxygen and pure oxygen burning roller-way kiln |
-
2008
- 2008-12-15 CN CN2008102337264A patent/CN101445372B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791490A (en) * | 2014-02-25 | 2014-05-14 | 武汉理工大学 | Oxygen-enriched atmosphere ceramic sintering system and ceramic sintering method |
| CN109052999A (en) * | 2018-09-11 | 2018-12-21 | 营口益嘉镁业科技有限公司 | A kind of embrane method oxygen, oxygen-enriched combustion-supporting roast high-purity magnesium oxide technique mechanism |
| CN109052999B (en) * | 2018-09-11 | 2021-07-02 | 营口益嘉镁业科技有限公司 | Process mechanism for roasting high-purity magnesium oxide by membrane method oxygen production and oxygen enrichment combustion supporting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101445372B (en) | 2012-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103363811A (en) | Combustion method of high-temperature oxygen-mixed flue gas | |
| CN102853654B (en) | Air distribution process and air distribution system for rotary kiln | |
| CN100480206C (en) | Low heat value gas oxygen-enriched burning process in rotary lime kiln | |
| CN109554538A (en) | A kind of sintering method and device that can reduce solid fuel consumption amount and carbon emission | |
| CN201555238U (en) | Device for local oxygen enrichment and combustion assistance of boiler | |
| US9188333B2 (en) | Dilute combustion | |
| CN101445372B (en) | Method for applying membrane oxygen enrichment technology in roller kiln | |
| CN101893253A (en) | Method for improving combustion temperature of combustion furnace by local oxygen-enriched oxygenation jet combustion-supporting technology and device thereof | |
| CN112393599B (en) | Tangential curtain cooling type gas injection sintering machine and control method thereof | |
| CN101776260A (en) | Horizontal mobile grate gasifier | |
| CN101476045A (en) | Method for smelting copper | |
| CN205065703U (en) | Heating furnace hangs down NOX flue gas recirculation oxygen boosting burner | |
| CN112179153A (en) | Denitration method for sintering magnesia calcining flue gas | |
| CN203947032U (en) | Oxygen-enriched combusting is produced the device of lime | |
| CN207741121U (en) | A kind of burned waste gas device | |
| CN101413674A (en) | Oxygen-enriched air mixed blowing combustion adjuvant boiler energy-saving method and employed equipment thereof | |
| CN104649600A (en) | Rotary cement kiln oxygen-enriched calcining device and rotary cement kiln oxygen-enriched calcining process | |
| CN100344568C (en) | Cement clinker sintering technology and its equipment | |
| CN103791490A (en) | Oxygen-enriched atmosphere ceramic sintering system and ceramic sintering method | |
| CN204058259U (en) | A kind of take coal dust as the roasting assembly of fuel | |
| CN102589309A (en) | Energy-saving process and energy-saving device for utilization of kiln waste | |
| CN105783022A (en) | Kiln catalytic combustion method and device | |
| CN202193731U (en) | Flue gas waste heat double-circulating gas burning lime kiln | |
| CN107804958A (en) | A kind of High Efficiency Thermal radiant glass kiln | |
| CN202626042U (en) | Device for improving concentration of carbon dioxide of lime rotary kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20090603 Assignee: Yunnan Yida Yimen Ceramic Co. Assignor: Wang Rulin Contract record no.: 2013530000065 Denomination of invention: Method for applying membrane oxygen enrichment technology in roller kiln Granted publication date: 20120523 License type: Exclusive License Record date: 20130624 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20151215 |
|
| EXPY | Termination of patent right or utility model |